Formula “V” Class Rules

These rules have been combined with the HOPRA SPEC JET rules and are no longer relevant. Please refer to the HOPRA "SPEC JET" Class rules.

The Formula “V” class is a variation on national Viper/G-Jet rules but specifies an F1/Indy-style body, a long wheelbase front axle position, and a wide hub front-end system.

PLEASE NOTE: You may utilize any non-independent front-end, including Viper "Razor" or any non-weighted o-ring-style front-end. However, doing so will disqualify you from any Concourse d'Elegance or Best Appearance Race Car competitions in this class.

Acceptable chassis’ are: BSRT G3/G3R/G3RS/G3RSB, Slottech T1/T2/T3, Wizzard Storm/Fusion, Viper V1 (V-SPEC)

      1. The chassis must be stock, commercially available, and cannot be machined, sanded, or cut except to provide the following:
        1. a. Add, remove, or re-add body mounts.
          b. Reinforce and/or replace pickup tabs.
          c. Add axle retainer.
      2. All front and rear weights and hardware must be used and must be from the same manufacturer as the chassis.
      3. Weight kits must contain 1 or 2 front weights and 2 rear traction weights made of brass only. The total weight kit, including mounting hardware, must weigh a minimum of 1.8 grams.
      4. All magnets shall remain in their stock location. No material or method may be used to restrict the movement of the magnets.
      5. Only compression-molded Ceramic Grade polymer motor magnets are allowed.
      6. The guide pin can be a stock replacement. It may be glued in place but shall remain in any one of the stock positions.
      7. The armature must be stock or hot stock. The minimum ohm allowed shall be 5.8 Ohm. 9.0 Ohm armatures are also allowed.
      8. The gear ratio must be a 7-tooth pinion with a 23-tooth crown gear. No metal gears are allowed.
      9. You may utilize any non-independent front-end, including Viper “Razor” or any non-weighted o-ring-style front-end. However, doing so will disqualify you from any Concourse d’Elegance or Best Appearance competitions in this class.
      10. Rear tires shall be commercially-available solid silicone, rubber, or urethane only.
      11. Rear wheels shall be commercially-available double or single flanged.
      12. Electrical systems must be stock or stock replacement. Shunts are not allowed.
      13. The use of glue shall not be allowed on the chassis, magnets, or bulkheads.
      14. Armatures must be stock and therefore not be ‘worked up’ in any way (examples: commutator tied-off, windings or comm epoxied, windings removed, commutator cut or diamond-trued, solder on tabs beyond factory-applied). Race control may ask for the armature to be removed to be measured for resistance.
      15. Armatures with balance marks or material removed from rotors by any means are not permitted. Armature timing may not be altered other than the use of the movable timing bracket.
      16. The body must be an open-wheel, F1/Indy hard plastic, resin, or 3D-printed material. The weight of the body may not be less than 2.1 grams. All wings must be secured in a fixed position. The front wings may be repaired/reinforced using styrene by removing a small amount of plastic under the front wing. A very small amount of plastic may be removed on the body nose to allow for clearance of the front brass weights, but no more. The rear adjustable wing flap must be glued into a fixed position. All bodies must be painted or otherwise detailed with racing livery.
      17. The minimum allowable wheelbase is 1 ¼ (1.250) inches.
      18. The maximum allowable width of the car is 1 5/16 (1.3125) inches.
      19. The maximum allowable length of the entire car is three (3.00) inches.
      20. Only one guide pin per car shall be allowed
      21. Track voltage will be set at 15.1 volts.